{"id":1123,"date":"2013-06-10T14:12:57","date_gmt":"2013-06-10T19:12:57","guid":{"rendered":"https:\/\/blogs.mathworks.com\/videos\/?p=1123"},"modified":"2013-06-10T14:12:57","modified_gmt":"2013-06-10T19:12:57","slug":"making-a-line-visible-over-an-image-in-matlab","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/videos\/2013\/06\/10\/making-a-line-visible-over-an-image-in-matlab\/","title":{"rendered":"Making a line visible over an image in MATLAB"},"content":{"rendered":"It can be difficult to see a line that is drawn over an image.  The line is often lost in the background colors.  That is why cursors are colored as they are, so that they are visible on any background.  I demonstrate some code that makes a line more visible with the same technique.\r\n\r\n<code><pre>\r\nfunction h = cursorLine(x,y,innerThickness, outerThickness)\r\n\r\nif nargin == 2\r\n    innerThickness = 2;\r\n    outerThickness = 4;\r\nend\r\n\r\nh.thick = line(x,y);\r\nh.thin  = line(x,y);\r\n\r\nset(h.thick, 'color', [1 1 1]);\r\nset(h.thin , 'color', [0 0 0]);\r\n\r\nset(h.thick, 'linewidth', outerThickness);\r\nset(h.thin , 'linewidth', innerThickness);\r\n<\/pre><\/code>\r\n\r\n<div><div class=\"row\"><div class=\"col-xs-12 containing-block\"><div class=\"bc-outer-container add_margin_20\"><videoplayer><div class=\"video-js-container\"><video data-video-id=\"3877304449001\" data-video-category=\"blog\" data-autostart=\"false\" data-account=\"62009828001\" data-omniture-account=\"mathwgbl\" data-player=\"rJ9XCz2Sx\" data-embed=\"default\" id=\"mathworks-brightcove-player\" class=\"video-js\" controls><\/video><script src=\"\/\/players.brightcove.net\/62009828001\/rJ9XCz2Sx_default\/index.min.js\"><\/script><script>if (typeof(playerLoaded) === 'undefined') {var playerLoaded = false;}(function isVideojsDefined() {if (typeof(videojs) !== 'undefined') {videojs(\"mathworks-brightcove-player\").on('loadedmetadata', function() {playerLoaded = true;});} else {setTimeout(isVideojsDefined, 10);}})();<\/script><\/div><\/videoplayer><\/div><\/div><\/div>\r\n <\/div>\r\n","protected":false},"excerpt":{"rendered":"<div class=\"thumbnail thumbnail_asset asset_overlay video\"><a href=\"https:\/\/blogs.mathworks.com\/videos\/2013\/06\/10\/making-a-line-visible-over-an-image-in-matlab\/?dir=autoplay\"><img decoding=\"async\" src=\"https:\/\/cf-images.us-east-1.prod.boltdns.net\/v1\/static\/62009828001\/225eab9d-8820-463e-8c2f-c0e319db6b56\/57b354a0-ca55-4f75-9fbf-21d8fd258811\/1280x720\/match\/image.jpg\" onError=\"this.style.display ='none';\"\/>\n      <div class=\"overlay_container\">\n      <span class=\"icon-video icon_color_null\"><time class=\"video_length\">1:27<\/time><\/span>\n      <\/div>\n      <\/a><\/div><p>It can be difficult to see a line that is drawn over an image.  The line is often lost in the background colors.  That is why cursors are colored as they are, so that they are visible on any&#8230; <a class=\"read-more\" href=\"https:\/\/blogs.mathworks.com\/videos\/2013\/06\/10\/making-a-line-visible-over-an-image-in-matlab\/\">read more >><\/a><\/p>","protected":false},"author":68,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,12],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/1123"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/users\/68"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/comments?post=1123"}],"version-history":[{"count":6,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/1123\/revisions"}],"predecessor-version":[{"id":1137,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/1123\/revisions\/1137"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/media?parent=1123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/categories?post=1123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/tags?post=1123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}